Experimental groups

Question 1

Independent groups

Define

Answer 1

Randomly split the sample into two groups and get one group to complete condition A and the other to complete condition B, the data collected from condition A is compared to that of condition B

Question 2

Independent group

Evaluation- negative

Answer 2

The change you measure might not be due to IV and could be due to an extrenous variable.

Question 3

Independent

Evaluation- positvie

Answer 3

Less likely to work out the aim than random.
No order effects as participants only take part in 1 condition

Question 4

Repeated measures

Define

Answer 4

All participants take part in all conditions in the experiment, comparing the particpants results from condition A to condition B

Question 5

Repeated measures

Evaluation- negative

Answer 5

Order effects could make the results scewed, and they could alter their behaviour due to demand characterisitcs

Question 6

Repeated measure

Solution

Answer 6

Counter balancing- gettin half to complete condition A then B and the other half to complete B then A

Question 7

Repeated measure

Evaluation- positive

Answer 7

Participant variables between conditions is not a problem as they take part in both conditions.

Question 8

Matched Pairs

Define

Answer 8

Two seperate groups are used but the reasercher finds characteristics like IQ then pair them off with people of the same and put on in condition A and the other in condition B

Question 9

Matched pair

Evaluation- positive

Answer 9

Reduces participant variables as they are matched by relevant characteristics
No order effects as they only do one condition.

Question 10

Matched pair

Evaluation- negative

Answer 10

Takes longer to set up, need twice as many participants as repeated measure groups and participants are similar not identical so there will still be some participant variables